OpenLint review
A community-built CLI for linting OpenAPI, AsyncAPI, and Arazzo with custom rules.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
OpenLint is a community-developed, open-source linter and ruleset project for teams that want to check API artifacts against consistent standards. Its CLI and packages lint JSON and YAML, with built-in rulesets for OpenAPI, AsyncAPI, and Arazzo. Teams can also define custom rulesets and JavaScript or TypeScript functions, making it a fit for organizations with API style guides that extend beyond default checks. It is intended for individual contributors as well as small, mid-market, and enterprise teams.
OpenLint’s scope is useful when a team works across several API description formats or wants the same checks in developer workflows and continuous integration. Linting runs locally rather than sending API descriptions or rulesets to an OpenLint service, and the tools can be used in CI workflows or IDEs. The project also maintains a ruleset specification and conformance work in public. It is focused on validation and rule authoring, though; teams looking for a broader API design, governance, or management suite should look elsewhere.
The project describes itself as free and open source, with self-hosted deployment and support through the community. Its tools run on Linux, Windows, and macOS. The project was established in September 2026, so its published maturity signals are limited compared with a long-established product. That makes OpenLint most appropriate for teams comfortable adopting community-developed tooling and evaluating its rulesets for their own standards. Teams that need vendor-backed support or an established support structure should consider alternatives. There are no AI features; the value here is configurable linting, not AI-assisted review.
OpenLint pros and cons
- Where it wins
- Built-in rulesets cover OpenAPI, AsyncAPI, and Arazzo.
- Teams can create custom rulesets and JavaScript or TypeScript functions.
- Runs locally and can be used in CI workflows.
- Where it doesn't
- Support is community-based.
- The project was established in September 2026, so its track record is young.
- It focuses on linting JSON and YAML API artifacts, not broader API management.
OpenLint fact sheet, pricing and score →
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